My dealer is selling an almost new stihl br600 for $390, the blower looks almost new with no big scratches or anything. The previous owner had some properties(a hospital I think) that didn't want the loud blower so he had to give it back to the dealer. I was told he only owned it for a few months and it doesn't look heavily used at all. The dealer said the only difference was the tube at the end of the blower, but I've heard that there are some differences in the valves and the gas tubes, am I correct? My question is should I spend $390 for a regular br600 or should I spend $490 and get a br 600 MAGNUM? Are the differences really big and worth $100? The dealer will also give me a full warranty on the mower even though it is slightly used.